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Financial Statement Information Schedule of Estimated Useful Lives, Finite Lived Intangible Assets (Details) $ in Thousands, SEK in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 SEK	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Finite-Lived Intangible Assets
Amortization of Intangible Assets	$ 26,000	$ 25,000		$ 74,000	$ 58,000
Equity in earnings (loss) of unconsolidated subsidiaries	2,673	$ 29		$ 3,878	$ (519)
Trade names and trademarks | Minimum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			4 years	4 years
Trade names and trademarks | Maximum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			30 years	30 years
Customer and supplier relationships | Minimum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			4 years	4 years
Customer and supplier relationships | Maximum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			20 years	20 years
Software and technology related assets | Minimum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			3 years	3 years
Software and technology related assets | Maximum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			8 years	8 years
Covenants not to compete | Minimum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			1 year	1 year
Covenants not to compete | Maximum
Finite-Lived Intangible Assets
Finite-Lived Intangible Asset, Useful Life			5 years	5 years
Mekonomen
Finite-Lived Intangible Assets
Equity in earnings (loss) of unconsolidated subsidiaries	$ 3,000			$ 5,000
Proceeds from Equity Method Investment, Dividends or Distributions			SEK 67	$ 7,000

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